Ashtangasamgraha 49.70

49.70

sarpiṣaśca palamekata eta dyojayet pariṇate ca ghṛtāḍhyām |

bhojanaṃ samadhu vatsaramevaṃ śīlayannadhikadhīsmṛtimedhāḥ ||

and one pala of ghee—one should combine all these together; when digested, one should take a meal rich in ghee
and with honey; practicing this for a whole year, one attains superior intellect, memory, and cognitive capacity;